They are lovely fish but I don't think they live for very long 2 to 3 years max.
Sorry don't normally copy and paste but thought you might find this interesting
In the wild, parasites picked off larger reef fish make up a portion of the Neon Blue Goby's natural diet. However, in the home aquarium, the Neon Blue Goby needs to be fed a variety of live and frozen brine shrimp, frozen mysis shrimp, table shrimp, and frozen food preparations for carnivores. If kept in a reef aquarium, the Neon Blue Goby should be fed once per day.